A non-point source pollution control method based on the principle of soil moisture conservation

Abstract

The invention discloses a face source pollution control method based on the soil moisture preservation principle. The method comprises the steps that multiple contour lines arranged at equal intervals are made in the gentle slope direction, a flood interception ring groove avoiding excessive runoff flow is formed in the counter line located on the topmost part, multiple crops are planted on the gentle slope contour lines which are perpendicular to the flood interception ring groove and are located below the flood interception ring groove, green manure is evenly planted between the crops planted at intervals, and multiple runoff guiding and discharging paths are arranged between the crops and the green manure; a garden which is communicated with the runoff guiding and discharging paths and serves as a face pollution treatment buffering zone is arranged below the gentle slope, multiple runoff guiding and discharging paths are evenly distributed in the garden and are outwards communicated with a pretreatment pond intercepting solid impurities, and the pretreatment pond is communicated with an ecological fishpond through a grit basin, wherein the ecological fishpond recycles nitrogen, phosphorus and other nutrient elements. By means of the face source pollution control method, for control treatment over agriculture face source pollution, practicability is high, the technical cost is low, nutrient utilization is reasonable, and the nutrient element utilization rate is high.

Description

technical field [0001] The invention belongs to the technical field of agricultural non-point source pollution, and in particular relates to a method for controlling non-point source pollution based on the principle of soil moisture conservation. Background technique [0002] Agricultural non-point source pollution refers to the pollution of water environment caused by nutrients such as nitrogen and phosphorus, pesticides and other organic pollutants through surface runoff and infiltration during agricultural production activities. On a global scale, agricultural non-point source pollution is becoming the main cause of water pollution. The control of agricultural non-point source pollution has not only gradually become the top priority of water pollution control, but also gradually become an important task for the sustainable development of modern agriculture and society. However, existing non-point source pollution technologies seldom use topography for non-point source pol...

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Problems solved by technology

[0003] The purpose of the present invention is to address the deficiencies in the prior art, to provide a non-point source pollution control method based on the principle of soil moisture conservation, to solve the problem of high cost of the existing non-point source pollution control methods, rapid soil hardening, excessive concentration of nutrients and nutrient elements The problem of low utilization

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